The Yamaha FZR1000 is a motorcycle produced by Yamaha from 1987 to 1995. Classed as a sports motorcycle. The FZR1000 was generally regarded world's finest production sports motorcycle at that time and in its 1989 FZR1000R incarnation the engine produced over 140 hp with a class-leading handling to match. The FZR1000R won bike of year across the motorcycle press and was crowned the "Bike of the Decade" by Cycle World. The machine was continually updated throughout its lifetime and continued to collect awards through the early 1990s. Development The FZR1000 was a natural development for Yamaha's Genesis design concept pioneered with the Yamaha FZ750. The major feature update was in a new aluminum perimeter type frame, marketed as the 'Deltabox'. The frame was still in their early stages technologically, and although there was experience in using aluminum Deltabox frames on race machines, this would be its first application on such a large production road-going machine. Additionally a new wheel design with lightweight hollow spokes that were wide enough to take the latest radial tyres was fitted. The FZR1000 Genesis was presented to the public at the Cologne IFMA motorcycle show in Germany in September 1986 and went out of production following the 1994 introduction and sales success of the latest generation of SuperSport motorcycles, led by the 1992 introduction of the Honda Fireblade. Design Engine The FZR1000 engine was developed from similar smaller cc motors of that time like Yamaha FZ750 with the same liquid-cooled 5 valve per cylinder (3 inlet and 2 exhaust) engine design with 45'inclined cylinder block .The engine though similar was all new with a capacity of 989cc.The big 989cc motor had a larger valve sizes and correspondingly larger 37mm BDB Mikuni CV carburetors.The lubrication system was enhanced with a dual rotor oil pump and external oil cooler. In 1989 the machine received a major redesign, top to bottom to give a new capacity of 1002cc, the cylinder block angle was changed to 35' to reduce the wheelbase. The intake system was redesigned with even larger 38mm carburetors, larger intake and exhaust ports. A unique feature that gave the new EXUP model its commonly used name was Yamaha's four-stroke power valve system EXUP valve, a servo-motor-driven exhaust valve. This allowed large bore exhaust for improved gas flow at high engine speeds but with good low engine speed performance thanks the engine speed controlled exhaust valve restricting